ICU 71.1 71.1

normalizer2.h
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1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 *
6 * Copyright (C) 2009-2013, International Business Machines
7 * Corporation and others. All Rights Reserved.
8 *
9 *******************************************************************************
10 * file name: normalizer2.h
11 * encoding: UTF-8
12 * tab size: 8 (not used)
13 * indentation:4
14 *
15 * created on: 2009nov22
16 * created by: Markus W. Scherer
17 */
18
19 #ifndef __NORMALIZER2_H__
20 #define __NORMALIZER2_H__
21
27 #include "unicode/utypes.h"
28
29 #if U_SHOW_CPLUSPLUS_API
30
31 #if !UCONFIG_NO_NORMALIZATION
32
33 #include "unicode/stringpiece.h"
34 #include "unicode/uniset.h"
35 #include "unicode/unistr.h"
36 #include "unicode/unorm2.h"
37
38 U_NAMESPACE_BEGIN
39
40 class ByteSink;
41
85 class U_COMMON_API Normalizer2 : public UObject {
86 public:
91 ~Normalizer2();
92
104 static const Normalizer2 *
105 getNFCInstance(UErrorCode &errorCode);
106
118 static const Normalizer2 *
119 getNFDInstance(UErrorCode &errorCode);
120
132 static const Normalizer2 *
133 getNFKCInstance(UErrorCode &errorCode);
134
146 static const Normalizer2 *
147 getNFKDInstance(UErrorCode &errorCode);
148
160 static const Normalizer2 *
161 getNFKCCasefoldInstance(UErrorCode &errorCode);
162
184 static const Normalizer2 *
185 getInstance(const char *packageName,
186 const char *name,
187 UNormalization2Mode mode,
188 UErrorCode &errorCode);
189
200 UnicodeString
201 normalize(const UnicodeString &src, UErrorCode &errorCode) const {
202 UnicodeString result;
203 normalize(src, result, errorCode);
204 return result;
205 }
219 virtual UnicodeString &
220 normalize(const UnicodeString &src,
221 UnicodeString &dest,
222 UErrorCode &errorCode) const = 0;
223
246 virtual void
247 normalizeUTF8(uint32_t options, StringPiece src, ByteSink &sink,
248 Edits *edits, UErrorCode &errorCode) const;
249
264 virtual UnicodeString &
265 normalizeSecondAndAppend(UnicodeString &first,
266 const UnicodeString &second,
267 UErrorCode &errorCode) const = 0;
282 virtual UnicodeString &
283 append(UnicodeString &first,
284 const UnicodeString &second,
285 UErrorCode &errorCode) const = 0;
286
300 virtual UBool
301 getDecomposition(UChar32 c, UnicodeString &decomposition) const = 0;
302
327 virtual UBool
328 getRawDecomposition(UChar32 c, UnicodeString &decomposition) const;
329
345 virtual UChar32
346 composePair(UChar32 a, UChar32 b) const;
347
356 virtual uint8_t
357 getCombiningClass(UChar32 c) const;
358
373 virtual UBool
374 isNormalized(const UnicodeString &s, UErrorCode &errorCode) const = 0;
394 virtual UBool
395 isNormalizedUTF8(StringPiece s, UErrorCode &errorCode) const;
396
397
413 virtual UNormalizationCheckResult
414 quickCheck(const UnicodeString &s, UErrorCode &errorCode) const = 0;
415
438 virtual int32_t
439 spanQuickCheckYes(const UnicodeString &s, UErrorCode &errorCode) const = 0;
440
454 virtual UBool hasBoundaryBefore(UChar32 c) const = 0;
455
470 virtual UBool hasBoundaryAfter(UChar32 c) const = 0;
471
485 virtual UBool isInert(UChar32 c) const = 0;
486 };
487
499 class U_COMMON_API FilteredNormalizer2 : public Normalizer2 {
500 public:
511 FilteredNormalizer2(const Normalizer2 &n2, const UnicodeSet &filterSet) :
512 norm2(n2), set(filterSet) {}
513
518 ~FilteredNormalizer2();
519
533 virtual UnicodeString &
534 normalize(const UnicodeString &src,
535 UnicodeString &dest,
536 UErrorCode &errorCode) const U_OVERRIDE;
537
560 virtual void
561 normalizeUTF8(uint32_t options, StringPiece src, ByteSink &sink,
562 Edits *edits, UErrorCode &errorCode) const U_OVERRIDE;
563
578 virtual UnicodeString &
579 normalizeSecondAndAppend(UnicodeString &first,
580 const UnicodeString &second,
581 UErrorCode &errorCode) const U_OVERRIDE;
596 virtual UnicodeString &
597 append(UnicodeString &first,
598 const UnicodeString &second,
599 UErrorCode &errorCode) const U_OVERRIDE;
600
612 virtual UBool
613 getDecomposition(UChar32 c, UnicodeString &decomposition) const U_OVERRIDE;
614
626 virtual UBool
627 getRawDecomposition(UChar32 c, UnicodeString &decomposition) const U_OVERRIDE;
628
639 virtual UChar32
640 composePair(UChar32 a, UChar32 b) const U_OVERRIDE;
641
650 virtual uint8_t
651 getCombiningClass(UChar32 c) const U_OVERRIDE;
652
664 virtual UBool
665 isNormalized(const UnicodeString &s, UErrorCode &errorCode) const U_OVERRIDE;
685 virtual UBool
686 isNormalizedUTF8(StringPiece s, UErrorCode &errorCode) const U_OVERRIDE;
698 virtual UNormalizationCheckResult
699 quickCheck(const UnicodeString &s, UErrorCode &errorCode) const U_OVERRIDE;
711 virtual int32_t
712 spanQuickCheckYes(const UnicodeString &s, UErrorCode &errorCode) const U_OVERRIDE;
713
722 virtual UBool hasBoundaryBefore(UChar32 c) const U_OVERRIDE;
723
732 virtual UBool hasBoundaryAfter(UChar32 c) const U_OVERRIDE;
733
741 virtual UBool isInert(UChar32 c) const U_OVERRIDE;
742 private:
743 UnicodeString &
744 normalize(const UnicodeString &src,
745 UnicodeString &dest,
746 USetSpanCondition spanCondition,
747 UErrorCode &errorCode) const;
748
749 void
750 normalizeUTF8(uint32_t options, const char *src, int32_t length,
751 ByteSink &sink, Edits *edits,
752 USetSpanCondition spanCondition,
753 UErrorCode &errorCode) const;
754
755 UnicodeString &
756 normalizeSecondAndAppend(UnicodeString &first,
757 const UnicodeString &second,
758 UBool doNormalize,
759 UErrorCode &errorCode) const;
760
761 const Normalizer2 &norm2;
762 const UnicodeSet &set;
763 };
764
765 U_NAMESPACE_END
766
767 #endif // !UCONFIG_NO_NORMALIZATION
768
769 #endif /* U_SHOW_CPLUSPLUS_API */
770
771 #endif // __NORMALIZER2_H__
icu::Normalizer2::getRawDecomposition
virtual UBool getRawDecomposition(UChar32 c, UnicodeString &decomposition) const
Gets the raw decomposition mapping of c.
icu::Normalizer2::getDecomposition
virtual UBool getDecomposition(UChar32 c, UnicodeString &decomposition) const =0
Gets the decomposition mapping of c.
icu::Normalizer2::spanQuickCheckYes
virtual int32_t spanQuickCheckYes(const UnicodeString &s, UErrorCode &errorCode) const =0
Returns the end of the normalized substring of the input string.
UNormalization2Mode
UNormalization2Mode
Constants for normalization modes.
Definition: unorm2.h:48
utypes.h
Basic definitions for ICU, for both C and C++ APIs.
icu::UnicodeSet
A mutable set of Unicode characters and multicharacter strings.
Definition: uniset.h:285
UBool
int8_t UBool
The ICU boolean type, a signed-byte integer.
Definition: umachine.h:269
icu::Normalizer2::hasBoundaryAfter
virtual UBool hasBoundaryAfter(UChar32 c) const =0
Tests if the character always has a normalization boundary after it, regardless of context.
U_OVERRIDE
#define U_OVERRIDE
Definition: umachine.h:130
U_COMMON_API
#define U_COMMON_API
Definition: utypes.h:300
USetSpanCondition
USetSpanCondition
Argument values for whether span() and similar functions continue while the current character is cont...
Definition: uset.h:159
icu::FilteredNormalizer2::FilteredNormalizer2
FilteredNormalizer2(const Normalizer2 &n2, const UnicodeSet &filterSet)
Constructs a filtered normalizer wrapping any Normalizer2 instance and a filter set.
Definition: normalizer2.h:511
stringpiece.h
C++ API: StringPiece: Read-only byte string wrapper class.
icu::UnicodeString
UnicodeString is a string class that stores Unicode characters directly and provides similar function...
Definition: unistr.h:295
UChar32
int32_t UChar32
Define UChar32 as a type for single Unicode code points.
Definition: umachine.h:467
icu::UObject
UObject is the common ICU "boilerplate" class.
Definition: uobject.h:223
UErrorCode
UErrorCode
Standard ICU4C error code type, a substitute for exceptions.
Definition: utypes.h:415
icu::Edits
Records lengths of string edits but not replacement text.
Definition: edits.h:80
icu::Normalizer2::isNormalizedUTF8
virtual UBool isNormalizedUTF8(StringPiece s, UErrorCode &errorCode) const
Tests if the UTF-8 string is normalized.
icu::ByteSink
A ByteSink can be filled with bytes.
Definition: bytestream.h:53
icu::Normalizer2
Unicode normalization functionality for standard Unicode normalization or for using custom mapping ta...
Definition: normalizer2.h:85
icu::Normalizer2::quickCheck
virtual UNormalizationCheckResult quickCheck(const UnicodeString &s, UErrorCode &errorCode) const =0
Tests if the string is normalized.
icu::Normalizer2::append
virtual UnicodeString & append(UnicodeString &first, const UnicodeString &second, UErrorCode &errorCode) const =0
Appends the second string to the first string (merging them at the boundary) and returns the first st...
UNormalizationCheckResult
UNormalizationCheckResult
Result values for normalization quick check functions.
Definition: unorm2.h:97
unorm2.h
C API: New API for Unicode Normalization.
icu::Normalizer2::isInert
virtual UBool isInert(UChar32 c) const =0
Tests if the character is normalization-inert.
icu::Normalizer2::normalizeSecondAndAppend
virtual UnicodeString & normalizeSecondAndAppend(UnicodeString &first, const UnicodeString &second, UErrorCode &errorCode) const =0
Appends the normalized form of the second string to the first string (merging them at the boundary) a...
icu::Normalizer2::hasBoundaryBefore
virtual UBool hasBoundaryBefore(UChar32 c) const =0
Tests if the character always has a normalization boundary before it, regardless of context.
icu::Normalizer2::getCombiningClass
virtual uint8_t getCombiningClass(UChar32 c) const
Gets the combining class of c.
icu::Normalizer2::isNormalized
virtual UBool isNormalized(const UnicodeString &s, UErrorCode &errorCode) const =0
Tests if the string is normalized.
icu::Normalizer2::composePair
virtual UChar32 composePair(UChar32 a, UChar32 b) const
Performs pairwise composition of a & b and returns the composite if there is one.
uniset.h
C++ API: Unicode Set.
icu::Normalizer2::normalizeUTF8
virtual void normalizeUTF8(uint32_t options, StringPiece src, ByteSink &sink, Edits *edits, UErrorCode &errorCode) const
Normalizes a UTF-8 string and optionally records how source substrings relate to changed and unchange...
icu::StringPiece
A string-like object that points to a sized piece of memory.
Definition: stringpiece.h:60
icu::Normalizer2::normalize
UnicodeString normalize(const UnicodeString &src, UErrorCode &errorCode) const
Returns the normalized form of the source string.
Definition: normalizer2.h:201
unistr.h
C++ API: Unicode String.
icu::FilteredNormalizer2
Normalization filtered by a UnicodeSet.
Definition: normalizer2.h:499